Your Mustang's radiator is only one piece of the puzzle to keeping your Mustang's high power engine running cool, the other is your water pump. The water pump effectively pumps coolant throughout the entire system to bring engine temperatures under control. AmericanMuscle carries everything from coolant additives to replacement water pumps to keep your 2012 Mustang running nice and cool on even the hottest of summer days. It is also important stay on top of basic maintenance as well as checking your fluids regularly.